Observation of Gravitational Waves from a Binary Black Hole Merger
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Résumé
On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0×10(-21). It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ. The source lies at a luminosity distance of 410(-180)(+160) Mpc corresponding to a redshift z=0.09(-0.04)(+0.03). In the source frame, the initial black hole masses are 36(-4)(+5)M⊙ and 29(-4)(+4)M⊙, and the final black hole mass is 62(-4)(+4)M⊙, with 3.0(-0.5)(+0.5)M⊙c(2) radiated in gravitational waves. All uncertainties define 90% credible intervals. These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.
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La notice
- Revue
- Physical Review Letters
- Thématique
- Pulsars and Gravitational Waves Research
- Domaine
- Physics and Astronomy
- Établissements canadiens
- Canadian Institute for Theoretical AstrophysicsUniversity of Toronto
- Organismes subventionnaires
- Division of Human Resource DevelopmentSeventh Framework ProgrammeAustralian Research CouncilScience and Technology Facilities CouncilAgència per a la Competitivitat de l’EmpresaNatural Sciences and Engineering Research Council of CanadaMinistry of Education, IndiaRoyal SocietyMinisterio de Economía y CompetitividadMax-Planck-GesellschaftNarodowe Centrum NaukiNational Research Foundation of KoreaMinistério da Ciência, Tecnologia e InovaçãoIndustry CanadaGovern de les Illes BalearsMinistry of Science and Technology of the People's Republic of ChinaNederlandse Organisatie voor Wetenschappelijk OnderzoekCentre National de la Recherche ScientifiqueCouncil of Scientific and Industrial Research, IndiaNational Research FoundationInstituto Nazionale di Fisica NucleareEuropean CommissionRussian Foundation for Basic ResearchCanadian Institute for Advanced ResearchMinistero dello Sviluppo EconomicoInstitut des Origines de LyonMPS EspañaLeverhulme TrustScottish Funding CouncilStichting voor Fundamenteel Onderzoek der MaterieScottish Universities Physics AllianceHungarian Scientific Research FundIstituto Nazionale di Fisica NucleareDepartment of Science and Technology, Ministry of Science and Technology, IndiaOntario Ministry of Economic Development and InnovationScience and Engineering Research BoardNational Science FoundationKavli Foundation
- Mots-clés
- Gravitational wavePhysicsBinary numberBinary black holeBlack hole (networking)AstrophysicsAstronomyClassical mechanicsComputer science
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